Mercurial > hg > truffle
changeset 18598:d806707624bb
amd64 register config: reserve "home space" on windows in frame.
| author | Bernhard Urban <bernhard.urban@jku.at> |
|---|---|
| date | Wed, 03 Dec 2014 14:29:04 +0100 |
| parents | 95ec1f6723ac |
| children | 68cab2726edb |
| files | graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java |
| diffstat | 1 files changed, 9 insertions(+), 1 deletions(-) [+] |
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--- a/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java Wed Dec 03 09:53:46 2014 +0100 +++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java Wed Dec 03 14:29:04 2014 +0100 @@ -90,6 +90,12 @@ private final Register[] nativeGeneralParameterRegisters; private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7}; + /* + * Some ABIs (e.g. Windows) require a so-called "home space", that is a save area on the stack + * to store the argument registers + */ + private final boolean needsNativeStackHomeSpace; + private final CalleeSaveLayout csl; private static Register findRegister(String name, Register[] all) { @@ -143,9 +149,11 @@ if (config.windowsOs) { javaGeneralParameterRegisters = new Register[]{rdx, r8, r9, rdi, rsi, rcx}; nativeGeneralParameterRegisters = new Register[]{rcx, rdx, r8, r9}; + this.needsNativeStackHomeSpace = true; } else { javaGeneralParameterRegisters = new Register[]{rsi, rdx, rcx, r8, r9, rdi}; nativeGeneralParameterRegisters = new Register[]{rdi, rsi, rdx, rcx, r8, r9}; + this.needsNativeStackHomeSpace = false; } csl = null; @@ -199,7 +207,7 @@ int currentGeneral = 0; int currentXMM = 0; - int currentStackOffset = 0; + int currentStackOffset = type == Type.NativeCall && needsNativeStackHomeSpace ? generalParameterRegisters.length * target.wordSize : 0; for (int i = 0; i < parameterTypes.length; i++) { final Kind kind = parameterTypes[i].getKind();